Voltage-regulator.



No. 834,525. PATBNTBD 00T. 3o, 1906.

R. P. JACKSON.

VOLTAGE REGULATOR. APPLIOATION FILED JUNI'. 12. 1905. RBNBWBD APB. 28,1906.

Q Z INVENTOR ATTORN EY wlNEssEs:

'l/Vilkinsburg, in the county or" Allegheny and .ing v Unrrnn SfrArnS PArnivr onirica.

RAY r. JAoKSoN, or wnirnnssuse, rnNNsrLvANrA, Assreuon ro wnsrruenousn letterato a MANUrAcrUnrne coMrANr, A coa;-`

PORA'HON @F PENNSYLVANIA.

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To all whom/ it may concern:

Be it known that l, RAY P. JACKSON, a citizen of the United States, and a resident of State of Pennsylvania, have invented a new and useful lmprovement 'in Voltage-Regulators, of which the following is a specification.

My invention relates to voltage-regulators, and particularly to those in which the voltage applied to translating devices or to a distributing-circuit may be varied by varying the active'length or' a transformer-wind- The object of my invention is to provide means whereby large amounts of current may be conducted by circuit-controlling devices without injurious arcing between the circuit making and breaking terminals.-

When large amounts of current are to be delivered through switch devices to distributing-circuits, itis fre uently desirable that a plurality of switchesqbe connected inparallel circuit for lthe purpose. oi reducing the amount of current that traverses the individual circuits in which the switches are, located and which must be interrupted thereby when making'changes inthe circuit connections.l

My linvention consists'in providing a plurality of inductive windings that are soarranged in circuit that a plurality nf spaced leads trom a main transformer may be utilized simultaneously and the current conducted to the distributing-circuit througha plurality of switch devices without injurious sparking between the switch-contacts when vchanges in the ycircuit conditions are eected.v

The single igure ci the accompanying drawing illustrates a system of electrical distribution `embodying my invention.

A main transformer-winding 1, that may be supplied `with energy from a trolley-conductor 2 and'a track-rai-l-S or from any other suitable source, has a plurality of spaced leads 4 to 15, inclusive, which are respectively provided with switches-16 to 27, 'inelusive. The switches 16 to 27 are severally adapted to be operated by magnet-windings 23which may be energized by current from a battery 2,9 or from any other suitable source lf the master-switeh30 tion ,-switches 16,17, 13, and 19 will be and which may be controlledv by means of a master-switch 30. The switches 16 to 27 serve to connect the inductive windings 31 and 32 between different alternate leads from the transformer-winding 1, the circuits being so arranged that corresponding terminals of the inductive windings 31 and 32 will be connected to consecutive transformerleads. For example, inductive winding 3l may be connected between transformerleads e and 6, 3 and 3, 3 and 1G, 10 yand 12, or 12 and 1e, and terminal 33 thereof may be connected to transformer-lead d, 3, or 12, while terminal 3d may be connected to transformerlead 6, l0, or le.' The inductive winding 32 may be similarly connected be.- tween leads-5 and 7, 7 and 9, 9 and 11, 11 and 13, or 13 and`15.

A. third inductive winding` 35 is connected between points intermediate the terminals of.

the windings 31 and 32, which, as here shown, are and preferably will be the n iddle points thereof. A point intermediate `the terminals of the winding 35, which, as here shown, is754 .the'nniddle point, is connected to a distributing-conductor 3 6, betweenwhich and another distributing-conductor 37, that may be con.-

nected to one terminal ot the' transformerwinding 1 or to'any other suitable point in the `circuit, are motors 3,3', tor which ot course 'other translating devices may be substituted.-

yis moved to posiclosed'and inductive winding'31 will be connected between transformer-leads el, and 6 and inductive windin 32 will be connected between transformereads 5 and 7.. the currents which are supplied to' each ol the inductive windings from the transformerleads traverse the circuits in opposite directions toward the point of connection therewith ci' the terminal out the winding 35, the voltages existing between the terminals of the winding35 and the conductor 37 will be approximately equal to the differences of potential between lead 5j and conductor 37 and lead ti and conductor 37, respectively.

The inductive windingll i'n a similar manner serves to equalize t thereto from the inductive win ings 31 vand 32, andthe voltage applied to the distributing-circuit or that existing between the cone volta es supplied- Since.

senses midway between conductors 5 and 6 and thel conductor 37 if it is desired to raise ,the voltage applied i to the motors 38, the master-switch 3() should be moved to position b, when the switch 20 will be closed and the switch 16 opened, these operations resulting in connecting the inductive winding 31 between transformer-leads 6 and.4 3. lf the circuits are followed in a manner similar to what has just beendescriibed, it will be found that the voltage existing between the conductors 36 and' 37 will be approximately that betweenl a point in the transformer-winding 1 mid-way between the leads 6 and 7 and the conductor 37. Thel voltage of the distributing-circuit may be further varied by moving the masterswitch 30 to its succeeding positions or by returning it to its first position.

The inductive windings 31 and 32 will' ordinarily be constructed to operate at voltages equal to those existing between alternate transformer-leads, and their current capacities will be equal to approximately half the current capacity ofthe motors 38. Since the function of the winding 35 is to equalize the voltages applied to its terminals or approximately thediiiiierenee of potential existing between successive transformer-leads, it will ordinarily be constructedl for'norma-l operation upon a voltage equal to such difference of potential, and its currentv capacity `will be equal to the aggregate current capacity of the inductive windings 31 and 32.

While i have shown a specific form of transformer, it is to be understood that a two-winding transformer may, if desired, be employed instead of that shown or that the leads 4 to 15, inclusive, may be connected to any other suitable source of multivoltages.

It will` also be readily understood that any other form of controlling means, such as a drum type of controller, may be employed instead of the independently-operated switches, as here shown, andif independently-operated switches are employed they maybeA operated otherwise than by means of'electromagnets. i

I cl aimas my invention- 1. The combination, in a distributing-circuit, of a transformer having leads extending from severall points thereof, two inductive windings, means for eonnectingsaidl windings betweendifferent alternateI transformerleads and a third inductive winding having its terminals connectedy to points intermediate the terminals of the other twowindings and having a point intermediate its terminals connected to the distributing-circuit.

2. The combination with a distributingcircuit, of a transformer having leads extending from several points thereof, two inductive windings, means for connecting said windings between different alternate transformer-leads so that corresponding terminals vof the two windings shall be connected to consecutive transformer-leads, and a third inductive winding having its terminals connected to points intermediate the terminals of the other two windings and having a point intermediate its terminals connected to the distributing-circuit.

3. rThe combination with a distributingcircuit, of a transformer having leads extending from several points thereof, two inductive'windi-ngs, means for connecting said windings. between different alternate transformer-leads so that corresponding terminals of the two windings shall be connected to consecutive transformer-leads, yand a third inductive winding having its terminals connected to the middle points of the other two windings and having its middle point connected to the distributing-circuit.

4. The combination' with a distributingcircuit, of a transformer having leads extending from several pointsV thereof, a plurali-ty of inductive windings, means for connecting said windings between different alternate transformer-leads and another inductive wind-ing having connections with points intermediate the terminals of the other inductive windings and having a point intermediate its terminals connected to the distributing-circuit.

5. The lcombination with a distributingcircuit, 4of a transformer having leads extending from several points thereof, a plurality of inductive windings, means for connecting said windings between different alternate transformer-leadsso that corresponding terminals of diderent windings shall be connected to consecutive leads, and another inductive winding having connection with points intermediate the terminals of the other windings and having a point intermediate its terminals connected to the distributing-circuit.

6. The combination with a distributingcircuit, of a transformer-winding having leads extending from several points thereof, two inductive windings, means for connectingsaid windings between different alternate transformer-leads and a third inductive winding having its terminals connected to points intermediate the terminals ofthe other two windings and having a point intermediate its terminals connected to the distributing-circuit.

7. The combination withi a distributingcircuit, of' a transformer-winding having leads extending from severah points thereof, two inductive windings, means for connecting saidwindings respectively between different alternate` transformer-leads, and a third inductive winding having its terminals connected to the middle points of the other IOO two windings and having its middle point connected to the distributing-circuit.

8. Theycombination with a` series of conductors that are supplied with diEerent voltages, of a plurality of inductive windings, means for connecting said windings to different; alternate conductors of said series and an auxiliary inductive winding an intermediate point of which is connected to a dis-` tributing-circuit and theterminals of which are connected to intermediate points in the first-named inductive windings.

9. The combination with-.a series of conductors supplied with progressively-differing voltages, of a plurality of inductive windings, means for connecting the terminals of said windings to dierent alternate conductors of Asaid series and an auxiliary inductive winding connected between intermediate points in the first-named windings and having an intermediate point connected to a distributing-circuit.

10. rihe combination, in a distributingcircuit, of a transformer having leads extending from several points thereof, two inductive windings, means for connecting .said windings between different transformerleads, and a third inductive winding having its terminals connected to points intermediate the lterminals of the other two windings and having a point intermediate its terminals connected to the distributing-circuit.

11. -The combination with a distributingcircuit, of a transformer having leads extending from several points thereof, a plurality of inductive windings, means for connecting said windings between different transformerleads andanother inductive winding having connections with points intermediate the terminals ofthe other inductive windings and having a point intermediate its terminals connected to the distributing-circuit. d

12. -The combination with a distributingcircuit, of a transformer-winding having leads extending from several points thereof, two inductive windings, means for connecting said windings between different transformerleads and a; third inductive winding having itsterminals connected to points intermediate the terminals of the other two windings and having a point intermediate its terminals connected to the distributing-circuit.

13. The combination with a distributingcircuit, of a transformer-winding having leads extending from several points thereof, two inductive windings, means for connecting said windings respectively between different transformer-leads, and a third,inductive winding having its terminals connected to the middle points of the other two windingsr and having its middle the distributin -circuit.

14. The' com ination with a series of conductors that are supplied with different voltages, of a plurality of inductive windings, means for connecting said windings to different conductors of said series and an auxiliary inductive winding an intermediate point of which is connected toa distributingcircuit and the terminals of which are connected to intermediate points inthe iirstnamed inductive windings.

point connected to 15. The combination with a vseriesjof con-- ductors, and an auxiliary inductive winding g' having an intermediate point-connected to a distributing-,circuit and its terminals con.-

named inductive windings; V-

In testimony whereof I have hereunto subscribed-my name this 9th day of'June,

RAY r.- JAcxsoN. Witnesses S. PACKARD, BIRNEY HINES.

'90 nected to intermediate points in the first- 

